Engine block 1A-23
figure..
Bolt Specifications and Mounting Torque
No. Specification
Bolt rod
length
(mm)
Mounting
torque
(N·m)
1a, 3a, 4a,
5a
6a, 7a, 8a,
M6
25 8
～
12
2b, 10b
M6
30
8
～
12
12c M6 45 8
～
12
13d, 14d
M10
90
36.5
～
42.5
1.8.7 Explanations on the oil filter
mounting
Tighten bolts by steps according to the sequence
illustrated in the figure
1.8.8 Explanations on oil pump
disassembling/ mounting
1. Dismantle oil pump and timing chain case
assembly (see oil pump and timing chain case
assembly dismantling/mounting).
2. Disassemble parts according to the sequence
illustrated in the figure.
3. Mount parts according to the sequence
reverse to the disassembling process.
1 Bolt
2 Oil pump cover
3 Screw plug
4 Pressure spring
5 Control piston
6 Inner rotor (Smear oil before mounting)
7 Outer rotor (Smear oil before mounting)
1.8.9 Inspection of Oil Pump
Explanations on inspection of rotor clearance
1. Measure the following clearance, and replace
the rotor or pump body if necessary.
Standard gear tip clearance: 0.06
～
0.20mm
Maximum gear tip clearance: 0.22mm
Standard pump body clearance: 0.250
～
0.325
Maximum pump body clearance: 0.35mm
Standard backlash: 0.03
～
0.09mm
Maximum backlash: 0.14mm
